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Evaluate the Effect of the Intake Manifold Geometry on Cylinder-to-cylinder Variation Using 1D-3D Coupling Analysis
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 Title & Authors
Evaluate the Effect of the Intake Manifold Geometry on Cylinder-to-cylinder Variation Using 1D-3D Coupling Analysis
Park, Sangjun; Cho, Jungkeun; Song, Soonho; Cho, Jayun; Wang, Taejoong;
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 Abstract
CNG engine has been used as a transportation because of higher thermal efficiency and lower CO2 and particulate matter. However its out put power is decreased due to cylinder-to-cylinder variation during the supply of air-fuel mixture to the each cylinder. It also causes noise and vibration. So in this study, 1D engine simulation model was validated by comparison with experiment data and 3D CFD simulation was conducted to steady-state flow analysis about each manifold geometry. Then, the effects of various intake manifold geometries on variation were evaluated by using 1D-3D coupling analysis at engine speed of 2100 rpm range in 12 L CNG engine. As a result, variation was improved about 4 % though 3D CFD analysis and there was a variation within 3 % using 1D-3D coupling analysis.
 Keywords
CNG;CNG engine;Cylinder-to-cylinder variation;Intake manifold geometry;Simulation;
 Language
Korean
 Cited by
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